Wire-drawing machine.



R. D. CONNOR.

WIRE DRAWING MACHINE.

APPLICATION FILED OCT- 22] 1915. 1 1 @fi l 1 1 Patented Sept. 12, 1916.

4 SHEETS-SHEET I.

R. D. CONNOR.

WIRE DRAWING MACHINE.

APPLICATION FILED OCT 22,1915.

Patented Sept. 12,1916.

4 SHEETS-SHEET 2.

R. D. CONNOR.

WIRE DRAWING MACHINE.

APPLICATION FILED OCT. 22. 1915.

latvpted Sept. 12, 1916 v 4 SHEETS-SHEET 3.

I R. D. CONNOR.

WIRE DRAWING MACHINE.

APPLICATlON HLED OCT. 22,1915.

.Pai0nta10pf.12,1916.

LllQHlJLL 4 SHEETS-SHEET 4.

RU flavawmowfn ROBERT DUNCAN ooimon; or wi qwdm, MANCHESTER, ENGLAND;

WIRE- RAWING MACHINE.

To all whom it may concern."

Be it known that T, ROBERT DUNOAN Cote NOR,'21} subjectof the King of Great Britain and Ireland, and resident of Withington,

Manchester, England, have invented new and useful Improvenfents in Wire-Drawing' Machines, of which the following is aspecifica'tion.

This invention relates to apparatus for drawing wire by .the continuous method, in

which the w'ire is drawn througha series of dies at one operation.

The object of the invention is to provide .a series of 'drawing blocks, with complemental dies, so constructedand organized that: each block exerts on the wire o'nlysuffieient pullto draw it through'the'die immediately' preceding itand delivers the wire loosely to the next succeeding die thereby obviating slipping, or' pulling, and 'g'rinding, on the blocks. i T

The preferred embodiment of the invention is shown in the accompanying d'rawings, forming a part of the specification, in

"principle of the invention will be underview of which disclosure the underlying stood by those skilled in the art, irrespective of the concrete structure and arrangement selected forillustrative purposes,

wherein Figure 1 1S3. s1de elevation showing a complete machine constructed according'to the invention. Fig. 2 is av side view of the first drawing block and part of the table drawn to a larger scale, Fig. 3 is a cross 1 sectional view through one of the drawing blocks. Fig.4 is a sectional plan on the line 4,4 of Fig. 3. Fig. 5 is a side view partly in section showing the drive to the last block on an enlarged scale. "Fig; 6:

is a diagrammatic plan of the draw-bench, showing thetrain of gear wheels for rotating the drawing blocks. Fig. 7 is a perspective view of a combined die holderand trough to receive the lubricant or other:

treating material. Each drawing block comprises the block proper 0;, adapted to receive a sufiicient num-' ber of convolutions to cause the tractive effort of the block to draw, the wire through Specification of Letters Pate-1a.

, Application filed October 22, 1915. Serial No.,57,30 5. 1

adapted to receivethe, drawn wire.

the wire leaving the same. i Means are provided to grip the wire while the die, and havinga reel-like extension As shown, the latter "consists of columns I) t which, with the exception of the final block,

support a dome shaped member 0 having a central aperture 03 in line with which depends a central tube e, passing centrally through the'block and forming a guide for the initial .convolutions are wound on the finished wire. The driving shaft 9' is jour- V naled in the bench and is provided with fast and loose pulleys k and -Z respectively, to receive the drivingbelt. Upon, the shaft is a-beveled wheel'm which meshes with another beveled wheel n secured to and adapted to drive the shaft 0 of the block '5. Another gear. wheel pon the shaft 0' drives a gear wheel 1' on the preceding block, through an idler wheel 1', each block being provided with a corresponding gear wheel '9 and: receiving motion from the succeeding block through an idler wheel, the gear ratios being such that the peripheral speed of -the blocks, increases from; the initial block upward as hereinafter explained. Dies s are provided for each'block, said dies preferably being positioned by a holder t formed in one with or securedto a trough or the like u for receiving the usual lubricant or other treating materiall Beneath the row of hollow drawing blocks and in line therewith is a shaft 02 mounted in the table it and adapted to receive guide pulleys e0 oneof whichis located beneath the axis of, each of said blocks. These pulleys w,

in conjunction with a second series of guide pulleys w, mounted in brackets 3 on the top I of the table, are arranged to guide the wire ,blockand these may consist of a vise having 'the'; gripping jaw f, manipulated, or conan extensible chain band 2 located ina' groove -1 around the dome c, an adjustable from oif each drawing block to the next succeedingdi'e, tensioning or braking devices being provided to regulate the supply of wire drawn ofi the blocks. Such a tensioning device is conveniently formed by spring 2 being provided to govern the tension.

Draw tongs 3, operated by 'a" cable from the drum 4' are provided for the initial drawing, and handles 5 5 are conveniently arranged for manipulating the belt fork from either endof'the' machine. r

The operation of the device is as follows:

' The undrawn wire 'is carried on a swift or creel located at the forward end of the machine, said swift' or creel preferably being of the tilting type. The end of the wire,

after being pointed, is usually led into .a soap box through an ecentrically arranged hole in the back thereof, said back being roguide pulleys w, w to the next succeeding die,

tated from the driving shaft through the counter shaft 6. The first die is then placed in the last die holder and a short length of.

the wire drawn therethrough, after which said die is returned to its holder, opposite the first block and'the end of the wire'se cured by the jaw f in the respective vise.

Upon the machine being started the wire isdrawn by the first block until a suflicient number of convolu'ions are drawn on to it to insure a'grip, when the vise is released and the endof the wire passed up under the springband brakes, over the dome 0, down through the tube e and around the respective drawn wire gathers, as Will be apparent.

from the drawings.

When all the drawing blocks are in operation the wire is drawn in a continuous manner through the successive dies, and the gear ratios of the drawing blocks are normally such, that the peripheral speed of each succeeding block is greater than that of the precedin block, by an amount rather less than is su 'cient to take off. the Wire from said preceding .block, due allowance being made for. the elongation of the same, so that a gradual accumulation of the wire talres placeon' the respective blocks, that portlon of the wire between each block and the succeeding-die being free from tension, and

thus allowing of its being drawn forward by the succeeding block without friction.

As the supply of wire is exhausted at the feeding end, there is ample time for the machine minder to refill the swift or creel and prepare for the next operation before the wire is exhausted from all the drums. If desired, a trough 7 may be suspended below the guide pulleys -w containing suitable treating material when it is desired to use the wet process of drawing.

It will be observed that no slipping, pulling or grinding takes place on the drawing blocks, consequently no loss of driving power is occasioned or undue stresses or strains imparted to the wire, thereby perinitting the machine to be run at relatively high speeds, and allowing the wire to be drawn down more than heretofore without intermediate annealing. Further, by reason of the wire being caused to accumulate between each pair of dies, it is cooled before reaching the next die, the rotation of. the block materially assisting in the effect.

-What I claim is 1 Apparatus for drawing wire by the 'contmuous method comprising, in combinaing all the blocks at different peripheral' speeds, the increase in the peripheral speed of each succeeding block being less than that required to take up the wire wound on the preceding block, and means on each block for controlling the drawing off of the wire. substantially as described. p

3. .In apparatus for drawing wire continuously through a succession of dies, a series of dies, a series of hollow drawing blocks each adapted to receive-and accumulate the drawn wire and being provided'withtensioning means through which said wire is led to the next succeeding die, substantially as described.

. 4. In apparatus for drawing wire by the continuous method, a series of vertically arranged hollow drawing blocks each arovided with a superstructure having a .101-

low dome head and a spring band brake, a

final drawing block provided witha storing. reel, means for rotating all the blocks at diiferent'peripheral speeds, and means for guiding the wire, substantially as described.

5. In apparatus for drawing wire by the continuous method, a series of vertically arranged hollow drawin blocks each-provided with a superstructure liaving a hollow dome head and a spring band brake, a final drawiing block provided With a storing reel,

means for-rotating all the blocks at diiferent peripheral speeds, means for guiding the Wire and means for containing and holding treating material in proximity to the Wire, substantially as described.

In Witness whereof I have hereunto set my hand in the presence of two Witnesses. ROBERT DUNCAN CONNOR.

Witnesses:

J. BERNARD HAYWARD, F. O. PENNINGTON. 

